Tools · network protocols

Companies using GRE_

As of 4 November 2026, 125 companies name GRE in their own job postings; it leaves no trace on websites or in DNS.

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Largest market
–
Companies with 51+ staff
–
Top industry
–
Team that names it most
IT operations & business systems · 237 postings
Hiring on it, last 30 days
122 companies
Most often alongside
BGP · 119 companies
125companies show GRE, all sources
0on their website or in DNS records
125name it in their own job postings
438postings naming GRE, last 90 days
02 — Two ways we see a tool

Where GRE shows up

Each population is counted on its own. We never add them up without saying so, because they answer different questions.

Website and DNS footprint0

Companies whose own pages load GRE's scripts or embeds, or whose domain's mail and hosting records (SPF, DKIM, MX, CNAME) point at GRE. From our crawl of 41.5M company websites and the DNS sweep behind it. Reach: the tool is in the building.

Job postings125

Companies whose own postings say the team works in GRE. Read hourly from ~70 applicant tracking systems, with the function, a quote and a date. Intent: the team that runs it is hiring.

Both0

Companies in the footprint whose postings also name GRE. The rest of the posting population (125) runs GRE without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on GRE

Companies with 51+ employees and at least medium-confidence evidence in their own postings; job boards and portals left out.

InPostCourier & express delivery · Kraków, Poland1001-5000 employeesPenn StateUniversities · United States10,001+ employeesArchirodonCivil infrastructure contractors · United States10,001+ employeesTelecom AcademyIt & cybersecurity training · Bucharest, Romania51-200 employeesCrowdStrikeCybersecurity iam software · Sunnyvale, United States5001-10000 employeesAvMedHealth insurance brokers · Doral, United States501-1000 employeesNscaleGpu cloud & ai compute · London, United Kingdom51-200 employeesExperisIT services & consulting · France1001-5000 employeesKeplerSpace systems manufacturers · United States51-200 employeesTitan TechnologiesIT services & consulting · Destin, United States501-1000 employeesGroup-IBManaged cybersecurity services · Robinson Road, United States501-1000 employeesSanofiPharmaceutical manufacturers · Gentilly, United States10,001+ employeesArcelorMittalSteel & non ferrous metal producers · Luxembourg10,001+ employeesAdvensManaged cybersecurity services · Lille, France501-1000 employeesBlue OriginSpace systems manufacturers · Kirkland, United States10,001+ employeesSEACORPDefence systems manufacturers · Middletown, United States501-1000 employeesOculusITIT services & consulting · Hopkins, United States201-500 employeesFortinetManaged cybersecurity services · United States10,001+ employeesZscalerCybersecurity iam software · San Jose, United States5001-10000 employeesTower ResearchMarket research providers · United States501-1000 employees
125 companies show GRE; 0 of them have over 1,000 employees.

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06 — Job-posting evidence

Who runs GRE inside the company

The 125 companies whose postings name GRE: by country, size and the function of the role. The second number in the function table is companies.

Postings by function
postings · companies
IT operations & business systems
237 · 125
Sales
80 · 16
Software engineering
68 · 22
Engineering (non-software)
41 · 22
Customer service & success
26 · 7
General management & consulting
4 · 2
Product, program & project management
4 · 3
arts media and entertainment
2 · 2
construction and civil
2 · 1
Education & training
2 · 2
Posting companies by country
companiesshare
United States
8064%
United Kingdom
97%
France
86%
India
65%
Germany
43%
Poland
32%
Canada
22%
Spain
22%
Sweden
22%
United Arab Emirates
11%
Australia
11%
Brazil
11%
Posting companies by size
companiesshare
Self-employed
22%
2-10 employees
76%
11-50 employees
119%
51-200 employees
2722%
201-500 employees
1613%
501-1000 employees
86%
1001-5000 employees
1915%
5001-10000 employees
1210%
10,001+ employees
2318%
Hiring on it right now
postings
Postings, last 30 days
286
Postings, last 90 days
438
All open postings
602

122 companies opened a role that names GRE in the last 30 days. A hiring team that names its tools is the moment to write to the person who owns the stack.

07 — Named alongside

What GRE teams also ask for

Tools named in the same postings as GRE. Office software is left out.

08 — network protocols

GRE against the rest of its category

Ranked by companies naming each tool in postings. Whole category →

Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

125 companies name GRE in their own job postings; it leaves no trace on websites or in DNS, so the posting layer is the whole picture. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/gre)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • Website codeScripts, tags and embeds found on the company's own pages in our crawl of 41.5M sites. A tool counts once per company.
  • DNS recordsSPF includes, DKIM selectors, MX and CNAME records of the company's domain that point at GRE or another vendor. Swept in cycles; dedicated mail-provider and hosting facets open once coverage passes 80% per country.
  • Job postingsRead hourly from the applicant tracking systems behind company career sites. A tool counts when the employer's own text names it as the team's system; candidate wish-lists and apply boilerplate are excluded. Confidence low, medium or high per company.
  • Sending infrastructureCold-e-mail sending domains are look-alike domains on a provider's infrastructure (DNS records, certificate logs) that redirect to the company. Absence is not evidence: only companies with a found sending domain are counted.
  • CompaniesCountry, size and industry come from the company profile we build from its website; headcount from LinkedIn where known, otherwise estimated. Job boards, portals and aggregators are kept out of lists.
FAQ

GRE data: questions

How many companies use GRE?

125 as of 4 November 2026: 0 carry GRE on their website or in their DNS records and 125 name it in their own job postings; 0 show up in both. We keep the two counts apart because they measure different things.

What does "website or DNS" mean?

Our crawler finds GRE's scripts, embeds and tags on the company's own pages, and our DNS sweep reads the domain's mail and hosting records (SPF includes, DKIM selectors, MX, CNAMEs) that point at GRE. Either one puts the company in the footprint. The sweep is still running, so this number grows week by week.

Why is the job-posting number so much smaller?

A posting only names a tool when the team that will use it is hiring and chooses to say so. That makes it a smaller but stronger signal: it tells you which team runs GRE, with a quote and a date. The footprint tells you reach.

How fresh is this?

Career sites are read hourly, websites are re-crawled on a rolling schedule and DNS is re-swept in cycles. The date at the top is when these counts were computed.

Can I get the list?

Yes. The first 20 are on this page; the full 125 with verified e-mails and a weekly feed of new GRE users is in the product. Counting is free.

Companies and people

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Every company on GRE,
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